1, alkaloid allergy
An allergenic substance in yam is alkaloid, which mainly exists in higher plants. It is a basic organic compound containing nitrogen and has toxic or strong physiological effects on organisms. When handling yam or eating yam, when the hand or mouth comes into contact with alkaloids, symptoms such as redness, numbness, swelling of taste buds and sore throat will appear.
2. Saponin allergy
Another allergic component in yam is saponin, which is non-toxic, but can improve the permeability of cell membrane and promote the harm of alkaloids to human body. It will combine with cholesterol in red blood cells and have hemolytic effect; It will also stimulate mucous membrane, and skin or mucous membrane will be red and swollen when it comes into contact.
3, mucus protein allergy
Most of the first two kinds belong to contact allergy, while the mucin contained in yam belongs to edible allergy. After eating yam, the mucin in yam is a kind of foreign protein for human body, and people with allergic constitution can easily cause allergies and have various allergic reactions.
4. What about contact allergy of yam?
1. If it is a contact allergy, you can use some vinegar to rub and clean it, so that an acid-base neutralization reaction occurs to eliminate the stimulation of alkaloids on the body, and then wash the allergic part with soap to completely clean the saponin.
2. People who have contact allergies to yam should eat yam thoroughly, because the saponin and alkaloid of the immature yam are not destroyed, and it is also irritating.
3. When handling yam, you can wear gloves or wrap your hands in plastic bags, so that yam is completely out of touch with your hands.
4. You can also clean the yam, then cook or steam it directly, and then remove the skin of the yam, so there will be no allergic phenomenon.
5. The benefits of eating yam
Yam, eaten by human beings since ancient times, is one of the earliest plants eaten by human beings. As early as the Tang Dynasty poet Du Fu's poem, there was a famous sentence of "filling the intestines and eating more yam". Yam tuber is thick and juicy, sweet and soft, and sticky. Both raw and hot food are delicious.
1, invigorating spleen and stomach to help digestion
It is beneficial to the digestion and absorption function of the spleen and stomach, and it is a dual-purpose product of medicine and food that blindly tonifies the spleen and stomach. Both spleen yang deficiency and stomach yin deficiency can be eaten. Clinically, it is often used with Weichang Decoction to treat spleen and stomach weakness, anorexia, fatigue, diarrhea and other diseases.
2. Nourishing kidney and benefiting essence
Yam is rich in nutrients, which has the functions of strengthening the body, nourishing the kidney and replenishing essence. Can be used for treating kidney deficiency, nocturnal emission, excessive leucorrhea of women, frequent urination, etc.
3. Reduce blood sugar
It has the effect of lowering blood sugar. Can be used for treating diabetes, and is a good dietotherapy product for diabetics.
4, prolong life
Effectively prevent the deposition of blood lipids on the blood vessel wall and prevent heart disease. Achieve the effects of benefiting the mind, calming the nerves and prolonging life.
5. Relieve constipation
Yam contains a lot of starch, vitamins, protein and amino acids. Although yam can make people feel full for years, it will not lack nutrients, so it has a certain slimming effect. Eating yam can also help gastrointestinal digestion and absorption, promote intestinal peristalsis, and prevent and relieve constipation.
6. Benefiting lung and relieving cough
Yam contains saponin and mucilage, which has lubricating and moistening effects, and can be used to treat lung deficiency, phlegm cough and chronic cough.